Transaction Finalizers

💬 In plain words: Queueable Apex is Salesforce's modern asynchronous worker. Unlike older methods, it accepts complex objects as parameters and returns a trackable Job ID. Best of all, it allows for chaining—one job can trigger the next, passing the baton like a relay race. By attaching a Transaction Finalizer , you build a safety net that guarantees specific code will run (for logging or retrying) even if the main job crashes. 📌 The Order Fulfillment Example: Imagine an order ships. Job 1 calls the courier API. Once complete, it enqueues Job 2 to update the inventory system. Job 2 then enqueues Job 3 to email the invoice. This is an organized relay race where every runner gets a fresh set of governor limits. If Job 2 crashes due to a limit exception, its Transaction Finalizer catches the failure, logs it, and re-queues the job to try again. 🎬 Real-Life Application: The Relay That Never Drops the Baton A company needs to process b...